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Air Quality Guide for PM2.5

Air Quality Index (AQI) PM2.5 Health Effects Statement PM2.5 Cautionary Statement
Good
(0-50)		 PM2.5 air pollution poses little or no risk. None
Moderate
(51-100)		 Unusually sensitive individuals may experience respiratory symptoms. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Unhealthy for Sensitive Groups
(101-150)		 Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in persons with cardiopulmonary disease and the elderly. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
Unhealthy
(151-200)		 Increased aggravation of heart or lung disease and premature mortality in persons with cardiopulmonary disease and the elderly; increased respiratory effects in general population. Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion.
Very Unhealthy
(201-300)		 Significant aggravation of heart or lung disease and premature mortality in persons with cardiopulmonary disease and the elderly; significant increase in respiratory effects in general population. Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
Hazardous
(301-500)		 Serious aggravation of heart or lung disease and premature mortality in persons with cardiopulmonary disease and the elderly; serious risk of respiratory effects in general population. Everyone should avoid all outdoor exertion.
Beyond Index
(>500)		 Extremely High Levels of PM2.5: Steps to Reduce Your Exposure – Click Here
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Air Quality Guide for Ozone

Air Quality Index (AQI) Ozone Health Effects Statement Ozone Cautionary Statement
Good
(0-50)		 Air quality is satisfactory, and air pollution poses little or no risk. None.
Moderate
(51-100)		 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. (People sensitive to ozone may include People with lung disease, children, older adults, and people who are active outdoors, including outdoor workers.) Unusually sensitive people should consider limiting prolonged outdoor exertion. For more information, click here
Unhealthy for Sensitive Groups
(101-150)		 Members of sensitive groups may experience health effects. The general public is less likely to be affected. Sensitive groups should reduce prolonged or heavy outdoor exertion. Schedule outdoor activities in the morning when ozone is lower.
Unhealthy
(151-200)		 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Sensitive groups should avoid prolonged or heavy outdoor exertion. Everyone else should reduce prolonged or heavy outdoor exertion.
Very Unhealthy
(201-300)		 Health alert: The risk of health effects is increased for everyone. Sensitive groups should avoid all physical activity outdoors. Everyone else should avoid prolonged or heavy outdoor exertion.
Hazardous
(301-500)		 Health warning of emergency conditions: Everyone is more likely to be affected. Everyone should avoid all outdoor exertion.
Beyond Index
(>500)		 Extremely High Levels: Avoid all physical activity outdoors.
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Beijing - PM2.5

Past 24-hour PM2.5 AQI was No Data
Most Recent PM 2.5 AQI
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-- AQI
No Data
if at this level for 24 Hours
Concentration: -- µg/m³
Health Message:

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Beijing - Ozone

Past 24-hour Ozone AQI was No Data
Most Recent Ozone AQI
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-- AQI
No Data
if at this level for 8 Hours
Concentration: -- ppb
Health Message:

No message